[Koshou Shoushou] Kagai Jugyo ha Houkago ni
(C68) [First Aid (Kagura Sakana)] Naisho no Satoko (Higurashi no Naku Koro ni)
(CCTokyo132) [Kitei (Naoki)] Naisho Banashi (Kuroko no Basuke) [English]
(C85) [Chagashi Saiban (Yamabuki Mook)] Naisho no Roommate | Secret Roommate (IS <Infinite Stratos>) [English] [RapidSwitch+Life4Kaoru]
[Torajima-shi Kouhouka (Torajimaneko)] Builder to Fighter no Naisho Banashi (Gundam Build Fighters) [English] {Shotachan} [Digital]
(C89) [conezu step!+Ziggurat (Suzuki Akoni)] JK Yome Sakura no Kagai Jugyou
[usi] Otto ni Naisho de Ajimi Shite 2 [Digital]
Naisho no Kagai Jugyou Nyuumonhen
(C89) [666PROTECT (Jingrock)] Tenkousei JK Elf -Houkago Choukyou Jugyou-
[Agata] Naisho no Kakurenbo (COMIC Megamilk Vol.18)
(C80) [Shirakaba Doori (DRY)] Fuyuko Sensei no Hachimitsu Jugyou (Cerberus)
[Oozora Kaiko] Papa ni wa Naisho no Boshi no Fureai
[Pirates Patrol (Otokawa Kazuki)] Naisho no Omorashi [Digital]
(SC26) [PLUM (Kisaragi Kanna)] Naisho! (Sukatto Golf Pangya)
[Rokuichi] Ririn-san no Naisho no Kao to Daiji na Oheya (COMIC HOTMILK 2018-07) [Chinese] [無邪気漢化組] [Digital]
[Misao.] Minamo no Naisho | Minamo's Secret (Hajimete Janai yo?) [English] [Rin]
[Torajima-shi Kouhouka (Torajimaneko)] Builder to Fighter no Naisho Banashi (Gundam Build Fighters) [Digital]
[Ue ni Aru Mikan (Reitou Mikan, Amulai)] Dennou Sekai ni Torawarete ~Onna Avatar de Seihoushi Jugyou, Uketemasu~ [Chinese] [脸肿汉化组] [Digital]
Rean Kyoukan no Tokubetsu Kagai Jugyou
(C81) [CIRCLE ENERGY (Imaki Hitotose)] Sister Maria Sensei no Hachimitsu Jugyou (Boku wa Tomodachi ga Sukunai)
Naisho no Kagai Jugyou Ouyou Hen
[Vitamin Gohan (Hasegawa Keita)] Naisho no Sakuya-san | 不为人知的咲夜 (Touhou Project) [Chinese] [sismvg英渣汉化] [Digital]
(C90) [Dragon Kitchen (Sasorigatame)] Rem-rin to Naisho no Oshigoto (Re:Zero kara Hajimeru Isekai Seikatsu) [Chinese] [空気系☆漢化]
(C72) [kidnap company (Saitou Tsukasa)] Himitsu no Gashuu - Naisho no Jikan (Kodomo no Jikan)
Himitsu no Kagai Jugyou
Hoshuu Jugyou bu Seikatsu Kiroku | 补习授业部性爱记录
(C92) [666PROTECT (Jingrock)] Tenkousei JK Elf 3 -Houkago Yagai Jugyou- | High School Elven Transfer Student -After School Outdoor Lessons- [English] [Tremalkinger]
(C94) [Aimaitei (Aimaitei Umami)] Futanari Osananajimi to Ore to Hajimete no Gyaku Anal Kagai Jugyou 丨扶她青梅竹馬和我第一次的反向小穴做愛課外授課 [Chinese] [沒有漢化]
[Yukan high Zakura (Chieko)] Bijutsu Jugyou Dessin Model [Digital]
Keiko Sensei no Kagai Jugyou - Keiko Sensei Series 1
(C79) [Human High-light Film (Shiosaba)] Naisho no Ayanami (Neon Genesis Evangelion) [English] [CGrascal]
[Sakamata Nerimono] Sexual Fall (Megane Loli Choukyou Jugyou!! ~Otonashii Megane Lolikko ni Muriyari Dekachin Sounyuu~) [English] {Doujins.com}
[Ohigetan] Chikan Gakushuu Shidou Youryou ~Shou 6 Gyaku Chikan Kagai Jugyou Hen~ (COMIC LO 2016-08) [English] [Striborg]
[Nekomaru Rentarou] Naisho no Omajinai (Puni Pedo!!) [Chinese] [我是肛♂蛋!不是 融⚥合!] [Digital]
[BIG BOSS] Ichioku Sou Gyokusai╱Souko Sensei no Hachimitsu Jugyou (Rikujou Boueitai Mao-chan, Asagiri no Miko)
[Oshii Rei] Kougyaku Jugyou
Asahina Mikuru-sensei no Tokubetsu Jugyou
Tenshi no Kagai Jugyou Ch. 9
[Momonosuke] Shirai Sensei no Hoshuu Jugyou (Momoiro Otome Irony) [Chinese] [黑条汉化] [Digital]
[Morishima Kon] Naisho no Gohoushi (Oneshota Dish) [English] [Kusojiji] [Digital]
(C94) [Akausagi (Fukuyama Naoto)] Kagai Jugyou Sakuya Hen (Kagai Jugyou -Shiritsu Hakurei Joshi Gakuen-)
Chiron Sensei no Seikou Jugyou
[FEI] Sensei no ♥ Himitsu Jugyou Ch.1-3
(C88) [H-SQUAD (Guglielmo)] Zenra de Suiei no Jugyou!!
Kyou-sei Kagai Shidou
[Watanabe Wataru] Abunai Kojin Jugyou | Take private lessons in hazardous
[Anyakunin] Kagai Jugyou (Futa-On-Male)
Kagai Katsudou
[Iizuki Tasuku] Omoi de Ippai Ni Nin no Goudou jugyou?
(C90) [Raijinkai (Haruki Genia)] Naisho no Kagai Jugyou (NEW HORIZON) [English] {Hennojin}
Keiko Sensei no Chijoku Jugyou
(COMIC1☆8) [Atelier Lunette (Mikuni Atsuko)] Naisho Nano! -Haruhara-ke San Shimai Monogatari- [English]
(C88) [Fetism (Tanaka Ginji)] Takao-san no Naisho! (Kantai Collection -KanColle-)
[Katsurai Yoshiaki] Amatsuka Gakuen no Kaikan Jugyou (COMIC X-EROS#37) [Chinese] [空気系☆漢化]
(C91) [CHARAN PORAN (Nekono Matatabi)] Naisho no Rehearsal (THE IDOLM@STER CINDERELLA GIRLS)
Zenra de Suiei no Jugyou!! | Naked Swimming Class!!
[Hayake] Sensei to Himitsu no Jugyou | Secret Lessons with Sensei (COMIC LO 2021-07) [English] {Mistvern} [Digital]
(COMIC1☆9) [Shiratamaco (Shiratama)] Naisho no Passion - The Secret Passion (PriPara)
[Oozora Kaiko (Kaiko)] Papa ni wa Naisho no Boshi no Fureai [English] {forbiddenfetish77/cocblockula}
(Houraigekisen! Yo-i! 14Senme) [Testa Kitchen (Testa)] Onee-sama-tachi ni wa Naisho! (Kantai Collection -KanColle-)
(C90) [Raijinkai (Haruki Genia)] Naisho no Kagai Jugyou (NEW HORIZON)
[MaSBeYaAKT (MaSBe Akyto)] Petanko Ryou-chin ~Minna ni Naisho no Otoko no Ko Idol RYO-chan no Aruhi no Ohanashi (THE IDOLM@STER)
[Nyoroman Shouji] Mucchimuchi Keiko Sensei no Chou Nikkan Dohentai Jugyou! "Muchimuchi Roshutsu Choukyou Aheahe Chigoku Hen" (Kekko Kamen)
(C65) [Naisho no Tsubomi (Unazuki Renge)] Naisho no Tsubomi (Various)
[Mizuyuki] Futari no Naisho no ××× (COMIC HOTMILK 2016-06) [Chinese] [無邪気漢化組]
[Minor Boy] Keiko Sensei no Kagai Jugyou - Keiko Sensei Series 1
Classmate to Ecchi Jugyou Ch. 9
[Babymaker (Beco)] Naisho no Kozukuri 2 | Secret Lovechild 2 [English] [MintVoid]
(C90) [Dragon Kitchen (Sasorigatame)] Rem-rin to Naisho no Oshigoto (Re:Zero kara Hajimeru Isekai Seikatsu)
(C54) [Studio Wallaby (Kokuden Kadotake, Deep Purple '72, Leopard)] Mana no Naisho (White Album)
(C78) [Nekoneko Panchu! (Nekoneko Panchu)] Sanshimai Choukyou Yuugi [Yukari Hen] Yukari-chan no Butabana Kachiku Choukyou [Anal Higyaku Jugyou]
[MoonRevenge (Miyuma Subaru)] Futari no Naisho
(C73) [SUTE☆POTE (Kagura Soushi)] riri tama hoshuu jugyou! | Riritama Supplementary Lessons (Mahou Shoujo Lyrical Nanoha) [English]
[Asahina Makoto] Naisho no Natsuyasumi Ch. 1-2
(COMIC1☆7) [Bakunyu Fullnerson (Kokuriu)] Naisho no Oshigoto (Bakemonogatari) [Chinese] [黑条汉化]
Tenshi no Kagai Jugyou Ch. 5